Home / 21,067.17-29,072.18-12,114.47

Finding the Fourth Proportional to 21,067.17, 29,072.18 and 12,114.47

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Solution

The fourth proportional to 21,067.17, 29,072.18 and 12,114.47 is: 16,717.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.17 : 29,072.18 = 12,114.47 : x
  2. Step 2: Convert to fraction form
    21,067.17/29,072.18 = 12,114.47/x
  3. Step 3: Cross multiply
    21,067.17x = 29,072.18 × 12,114.47
  4. Step 4: Simplify right side
    21,067.17x = 352,194,155.41
  5. Step 5: Solve for x
    x = 352,194,155.41/21,067.17
  6. Step 6: Final answer
    x = 16,717.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.